HIGH-TEMPERATURE SOLUTIONS SUITABLE FOR THE GROWTH OF NDAL3(BO3)(4) CRYSTALS

The concentration region of the NdAl3(BO3)(4) phase in the NdBO3-AlBO3 -BaO . 2B(2)O(3) system was determined. The experimental data obtained make possible the choice of the most suitable region of high-temperat ure solutions for the growth of NdAl3(BO3)(4) single crystals. This re gion is between mole ratios of NdBO3:AlBO3=1:2 and 1:3. The best quali ty crystals were grown from solution with a mole ratio of NdBO3:AlBO3= 1:2 by spontaneous crystallization. The electronmicroscopy, X-ray powd er diffraction and DTA characterization of the NdAl3(BO3)(4) single cr ystals have been performed.